Graded Hammer Action

Assembly

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Weighted 88-key action with hammers, counterweights, contact sensors and return springs.

Direct parts	9
Total parts	531
Used in	1 assembly
Class	Assembly

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Weighted 88-key action with hammers, counterweights, contact sensors and return springs. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Graded Hammer Action parts and their functions

9 top-level parts · 531 parts in total · full bill of materials below

Graded Hammer Action parts diagram: 1 piano key, 2 key frame, 3 weighted hammer, 4 hammer counterweight, 5 hammer rail, 6 balance pin, 7 rubber dome switch strip, 8 coil spring, 9 fastener set. 531 parts in 9 top-level items. — Graded Hammer Action parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Piano Key	88×	White + black keys
2	Key Frame	1×	Action base frame
3	Weighted Hammer	88×	Graded weighted hammers
4	Hammer Counterweight	88×
5	Hammer Rail	1×	Hammer stop/cushion rail
6	Balance Pin	88×	Key pivot pins
7	Rubber Dome Switch Strip	88×	Rubber dome switch strip
8	Coil Spring	88×	Key return springs
9	Fastener Set	1×	Action screws

3D model

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Build & assembly graph

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Bill of materials for Graded Hammer Action

9 top-level lines · 9 rows shown · 531 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Piano Key	digital-piano-key	88×	88	·	part
2	Key Frame	digital-piano-key-frame	1×	1	·	part
3	Weighted Hammer	digital-piano-hammer	88×	88	·	part
4	Hammer Counterweight	digital-piano-counterweight	88×	88	·	part
5	Hammer Rail	digital-piano-hammer-rail	1×	1	·	part
6	Balance Pin	digital-piano-balance-pin	88×	88	·	part
7	Rubber Dome Switch Strip	digital-piano-switch-rubber	88×	88	·	part
8	Coil Spring	coil-spring	88×	88	·	part
9	Fastener Set	fastener-set	1×	1	·	part

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Where the graded hammer action is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Musical Instruments 1 Digital Piano

Used in 1 assembly

Digital Piano

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks